Hey Guys.

I recently shaped my first board. It’s a 5’10" X 21.25 X 3 retro twin keel fish. The problem is, I really botched the rocker. I knew that a fish needed minimal rocker, but I made a mistake right from the beginning. I was stuck with a 6’10" fish blank (US Blank, I believe) and I took most of the length from the tail, trying to be sure that I would have enough rocker in the nose… In hindsight, that was a dumb idea… I have nearly 5 inches of nose rocker, and I have 2 inches of tail rocker… And this nose rocker isn’t just a flip in the nose, its pretty well distributed through the front half of the board. I definitely learned a lot with this first shape, and I am really amped to take another stab at it.

So I’m going to try another fish in a couple weeks here, and see if I can learn from my mistakes. I am going to stick with the 5’10" length, go with a 21" width, and drop the thickness to about 2 5/8 inches. So what do you think would be some good rocker numbers for this board? I have read many posts which mention numbers something like 3.5 inch nose rocker, and 1.5 or so inches of tail rocker. But how is this rocker distributed? Could anyone help me out with some rocker numbers at, say, one foot from nose and tail? I just want to get it right this time…

I was just taking a look at the pdf thats been floating around the boards here of the Steve Lis 5’5" fish. The little section on rocker has me a little bit confused… I was trying to recreate this rocker in Aku Shaper just to get a visual of it, and it just isn’t panning out. The 3 1/4 of rocker at the nose makes sense, but the 3" at 63" (which is 5’3") seems like a bit much. I just can’t get a nice looking curve with 3.25 inches at the nose, and loosing only 0.25 inches of rocker in the first 2 inches of the board. If I make it about 2.6 inches of rocker at 5’3", it looks much more natural to me. Also, if I am interpreting this correctly, the rear 3 feet of the board has zero rocker. Wouldn’t this mean that the rear 3 feet of the board are completely flat and the tangent at the midpoint is parallel to this flat, 3 foot section?

Sorry about the rambling post with lots of questions, but I’m really just looking for any insight into the subject. So thank you all in advance for any thoughts. Hopefully with your help I can create a killer fish my second go-around.